| Adelajda | Polish | F | Noble |
| Adok | Polish | M | Red Earth |
| Agata | Polish | F | Kind |
| Agnieska | Polish | F | Pure |
| Ala | Polish | F | Truthful |
| Albinka | Polish | F | White |
| Aldona | Polish | F | Wise |
| Aleksy | Polish | M | Defender of mankind |
| Aleska | Polish | F | Defender of mankind |
| Alfons | Polish | M | Noble |
| Alicja | Polish | F | Truthful |
| Alina | Polish | F | Little noble one |
| Alka | Polish | F | Defender of mankind |
| Alojzy | Polish | M | Famous warrior or famous in battle |
| Amalja | Polish | F | Industrious |
| Amelja | Polish | F | Industrious |
| Anastazja | Polish | F | Resurrection |
| Anatazja | Polish | F | Ressurection |
| Anatol | Polish | M | Dawn, daybreak or sunrise |
| Andrzej | Polish | M | Manly |
| Ania | Polish | F | Grace |
| Aniela | Polish | F | Messenger |
| Aniol | Polish | M | Messenger |
| Anka | Polish | F | Grace |
| Antoni | Polish | M | Priceless, inestimable or praiseworthy |
| Antonin | Polish | M | Priceless, inestimable or praiseworthy |
| Antonina | Polish | F | Priceless, inestimable or praiseworthy |
| Anzelm | Polish | M | Divine protection |
| Apoloniusz | Polish | M | Of Apollo |
| Arek | Polish | M | The exalted one |
| Aron | Polish | M | The exalted one |
| Artur | Polish | M | Noble |
| Augustyn | Polish | M | Great |
| Aurek | Polish | M | Gold |
| Aureli | Polish | M | Gold |